fix: fixed onLongPress not working on touchableRipple

[dakshbhardwaj]

Summary

if we don't pass the onPress props then onLongPress was also not working in the TouchableRipple component.

Fixes: #3303

Test plan

I checked it by running the yarn run test, this change is simple and does not affect any files.

[callstack-bot]

Hey @dakshbhardwaj, thank you for your pull request 🤗. The documentation from this branch can be viewed here.